pin up

box up and pin down

上部阴螺纹-下部阳螺纹接头

male and female cross

阳螺纹-阴螺纹十字接头

boxpin connection

阴螺纹-阳螺纹连接

pepe bend with male and female thread

一头带阳螺纹一头带阴螺纹的弯头

Screwed 1;Screwed 2;Screwed 3;Screwed 4

螺纹接头 1;螺纹接头 2;螺纹接头 3;螺纹接头 4

Screwed Joint 1;Screwed Joint 2;Screwed Joint 3

螺纹接头 1;螺纹接头 2;螺纹接头 3

the part of a bolt between the thread and the head.

螺钉的头部和螺纹之间的部分。

pipe bend with female thread

两头带阴螺纹的弯头

"If sweat fittings are used, do not apply heat to the nipples on top of the heater."

如果使用焊接管道,不要在热水器顶部的螺纹接头上加热。

Nuts have internal (or female) threads to match those of the Bolt.

螺母上有内(或阴)螺纹,与螺栓上的螺纹相啮合。

pin-to-box pipe

阳螺纹-阳螺纹管子

pin-to-pin reducer

两头阳螺纹的大小头

A Bolt consists of a head and a cylindrical Body with screw threads along a portion of its length.

螺栓是一个带头部并在部分长度上有螺纹的圆柱体。

A small block of metal or wood with a central, threaded hole that is designed to fit around and secure a bolt or screw.

螺母，螺帽中部有螺纹用于与螺栓或螺钉相配合的小块金属或木头

A study of the surface crack at thread root of tool joint pins by the aid of finite element method.

石油钻杆公接头螺纹牙根部表面裂纹有限元计算

A pipe coupling threaded on both ends.

螺纹接头一种两端都带外螺纹的管子

double pin sucker rod

两头阳螺纹的抽油杆

It is imperative that no heat is applied to connection as nipples contain a plastic liner.

如果螺纹接头包含塑料衬垫,则不要在这种螺纹接头上焊接。